He's absolutely correct. A lot of men feel very uncomfortable with gay men because they, themselves, do not feel comfortable with their own sexuality's. To see an individual living in their truth is a reminder, to that individual, that they cannot. It makes them angry because they are trapped in a prison of their own insecurity. They then project that onto gay men. Its really a call for help. There are so many different factors that play into this type of behavior. From sexism (men hate gay men because they hate women). To patriarchal ideals of masculinity (instead of asking for help men tend to lash out at others because men are taught that violence is okay, but that vulnerability is not). As well as male privilege (not wanting to give up the privileges that come from being a masculine presenting male by coming out and admitting that they're sexually attracted to men). It is sad really. So many men are alive, but so many men will never truly live. Toxic masculinity kills men.